projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 53e72406 MZ |
1 | /* |
| 2 | * Copyright (C) 2012 ARM Ltd. | |
| 3 | * Author: Marc Zyngier <marc.zyngier@arm.com> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License version 2 as | |
| 7 | * published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU General Public License | |
| 15 | * along with this program; if not, write to the Free Software | |
| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef __ASM_ARM_KVM_ARCH_TIMER_H | |
| 20 | #define __ASM_ARM_KVM_ARCH_TIMER_H | |
| 21 | ||
| 22 | #include <linux/clocksource.h> | |
| 23 | #include <linux/hrtimer.h> | |
| 24 | #include <linux/workqueue.h> | |
| 25 | ||
| 26 | struct arch_timer_kvm { | |
| 53e72406 MZ |
27 | /* Is the timer enabled */ |
| 28 | bool enabled; | |
| 29 | ||
| 30 | /* Virtual offset */ | |
| 31 | cycle_t cntvoff; | |
| 53e72406 MZ |
32 | }; |
| 33 | ||
| 34 | struct arch_timer_cpu { | |
| 53e72406 MZ |
35 | /* Registers: control register, timer value */ |
| 36 | u32 cntv_ctl; /* Saved/restored */ | |
| 37 | cycle_t cntv_cval; /* Saved/restored */ | |
| 38 | ||
| 39 | /* | |
| 40 | * Anything that is not used directly from assembly code goes | |
| 41 | * here. | |
| 42 | */ | |
| 43 | ||
| 44 | /* Background timer used when the guest is not running */ | |
| 45 | struct hrtimer timer; | |
| 46 | ||
| 47 | /* Work queued with the above timer expires */ | |
| 48 | struct work_struct expired; | |
| 49 | ||
| 50 | /* Background timer active */ | |
| 51 | bool armed; | |
| 52 | ||
| 53 | /* Timer IRQ */ | |
| 4b4b4512 | 54 | struct kvm_irq_level irq; |
| f120cd65 MZ |
55 | |
| 56 | /* VGIC mapping */ | |
| 57 | struct irq_phys_map *map; | |
| 9b4a3004 MZ |
58 | |
| 59 | /* Active IRQ state caching */ | |
| 60 | bool active_cleared_last; | |
| 53e72406 MZ |
61 | }; |
| 62 | ||
| 53e72406 | 63 | int kvm_timer_hyp_init(void); |
| 05971120 CD |
64 | void kvm_timer_enable(struct kvm *kvm); |
| 65 | void kvm_timer_init(struct kvm *kvm); | |
| f120cd65 MZ |
66 | int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu, |
| 67 | const struct kvm_irq_level *irq); | |
| 53e72406 MZ |
68 | void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu); |
| 69 | void kvm_timer_flush_hwstate(struct kvm_vcpu *vcpu); | |
| 70 | void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu); | |
| 71 | void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu); | |
| 1df08ba0 AB |
72 | |
| 73 | u64 kvm_arm_timer_get_reg(struct kvm_vcpu *, u64 regid); | |
| 74 | int kvm_arm_timer_set_reg(struct kvm_vcpu *, u64 regid, u64 value); | |
| 75 | ||
| 1a748478 | 76 | bool kvm_timer_should_fire(struct kvm_vcpu *vcpu); |
| d35268da CD |
77 | void kvm_timer_schedule(struct kvm_vcpu *vcpu); |
| 78 | void kvm_timer_unschedule(struct kvm_vcpu *vcpu); | |
| 1a748478 | 79 | |
| 9b4a3004 MZ |
80 | void kvm_timer_vcpu_put(struct kvm_vcpu *vcpu); |
| 81 | ||
| 53e72406 | 82 | #endif |